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This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
In this situation it is generally uncommon to talk about half-life in the first place, but sometimes people will describe the decay in terms of its "first half-life", "second half-life", etc., where the first half-life is defined as the time required for decay from the initial value to 50%, the second half-life is from 50% to 25%, and so on.
Half-Life is a first-person shooter that requires the player to perform combat tasks and puzzle solving to advance through the game. Unlike most first-person shooters at the time, which relied on cut-scene intermissions to detail their plotlines, Half-Life ' s story is told mostly using scripted sequences (bar one short cutscene), keeping the player in control of the first-person viewpoint.
Alternatively, since the radioactive decay contributes to the "physical (i.e. radioactive)" half-life, while the metabolic elimination processes determines the "biological" half-life of the radionuclide, the two act as parallel paths for elimination of the radioactivity, the effective half-life could also be represented by the formula: [1] [2]
Decay is played in a split screen mode, as seen here.. As is the case with the other games in the Half-Life series, Decay is a first-person shooter.Like the original title it is based on, Decay requires players to engage in combat with hostile non-player characters and complete various puzzle solving tasks to advance through the game.
Absorption half-life 1 h, elimination half-life 12 h. Biological half-life ( elimination half-life , pharmacological half-life ) is the time taken for concentration of a biological substance (such as a medication ) to decrease from its maximum concentration ( C max ) to half of C max in the blood plasma .
Half-Life 2 was selected by readers of The Guardian as the best game of the decade, with particular praise for the environment design. The Guardian journalist Keith Stuart wrote that it "pushed the envelope for the genre, and set a new high watermark for FPS narrative". [72] Half-Life 2 won Crispy Gamer's Game of the Decade [73] tournament ...
Half Life received mixed-to-positive reviews; Newsweek called it "brilliant and funny," [1] and The New York Times, while praising Jackson's ambition as "truly glorious," added that "All this razzle-dazzle, all the allusions, [and] the narrative loop-de-loops [get] a bit busy." [2] It won the 2006 James Tiptree, Jr. Award for science fiction ...